Exoframe 4.0 Ankle Strap The Exoframe 4.0 Ankle Strap provides a secure hold and high responsiveness during high-speed riding. Lightweight and durable, it's a favorite among team riders and shop staff. Flex: 7/10 Package Contents: Ankle strap pads (left and right) x 1 each Ankle ratchet buckles x 2 Screws for attaching ratchet buckles x 2 Ankle strap connectors x 2 Screws for adjusting ankle strap length x 2 Compatibility: All UNION BINDINGS (16/17 - present) PRODUCT DETAILS • Stiffness: 7/10 • Union's most responsive strap ever • Ultra-durable DuPont Hytrel material • Distributes pressure evenly across the boot for a comfortable and secure fit • Double-hinge connector for smooth on/off • Lightweight magnesium ratchets • Fully assembled, ready to install • Includes a mesh carry bag • Size: M size fits Union M and L bindings I put these up for sale immediately after trying them on because they were a bit too big for my shoe size. My shoe size is 25cm. I only tried them on and haven't used them. They are almost new and unused.